A small rubber barrel integrated injection molding equipment

Abstract

The utility model relates to rubber bucket injection moulding technical field discloses a small -size rubber bucket integrated injection moulding equipment, including base, the inner surface of base is fixedly connected with lower mould through rubber block, the outer surface top of lower mould is connected with upper mould, the outer surface top of upper mould is fixedly connected with vibration motor, the top fixedly connected with male die of upper mould, the outer surface bottom of upper mould is equipped with female die, the outer surface top of male die is inserted with the inner surface of female die, the outer surface bottom of lower mould is provided with buffer assembly. In the utility model, the mould is vibrated through vibration motor drive, makes the gas inside material to gather to liquid surface fast under the shock, and is discharged through the multiple sets of exhaust hole of upper mould preset, effectively avoids bubble residual, scorch mark formation and filling resistance problem, improves the internal density and appearance integrity of rubber bucket greatly, guarantees product quality consistency.

Description

Technical Field

[0001] This utility model relates to the field of rubber barrel injection molding technology, and in particular to a small rubber barrel integrated injection molding equipment. Background Technology

[0002] The "small rubber bucket integrated injection molding equipment" is an automated molding equipment specifically designed for the mass production of small rubber buckets. Its core principle is to melt, inject, and solidify rubber or rubber-like materials (such as thermoplastic elastomers TPE, TPR, or specially treated rubber raw materials) into a complete small rubber bucket in one go through the injection molding process, achieving seamless, one-piece molding.

[0003] During injection molding, the prepared raw materials are first added to the hopper. The raw materials are gradually melted and mixed evenly by the heating of the barrel and the rotation of the screw, forming a flowable melt. The screw then propels the molten material forward, injecting it at high speed into the mold cavity through the nozzle until the cavity is completely filled. The pressure is then maintained to fill the gaps caused by the material's cooling and shrinkage. At the same time, the mold cooling system works to rapidly cool and solidify the material in the cavity. After cooling is complete, the mold clamping device opens the mold, and the ejection mechanism pushes the molded rubber barrel out of the cavity. The part is then removed manually or by a robot.

[0004] Considering that when the material is injected into the mold, if the air in the corners and deep cavities of the cavity does not have time to escape when the material front fills the cavity quickly, it will be "wrapped" inside the material by the front flow. The air trapped inside the material is difficult to expel naturally, which can easily form bubbles, scorch marks, or even cause insufficient filling of the cavity due to gas resistance. Therefore, a small rubber bucket integrated injection molding equipment is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a small rubber bucket integrated injection molding equipment, which aims to solve the problem in the prior art that when the material front end quickly fills the cavity during injection molding, the air in the corners and deep cavities of the cavity does not have time to escape and is easily wrapped by the front flow. Moreover, the wrapped air is difficult to expel naturally, which easily produces bubbles, scorch marks, or even insufficient cavity filling due to gas resistance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a small rubber bucket integrated injection molding equipment, including a base, a lower mold fixedly connected to the inner surface of the base by a rubber block, an upper mold contacting the top of the outer surface of the lower mold, a vibration motor fixedly connected to the top of the outer surface of the upper mold, a punch fixedly connected to the top of the upper mold, a concave mold opened at the bottom of the outer surface of the upper mold, the top of the outer surface of the punch inserting into the inner surface of the concave mold, and a buffer component provided at the bottom of the outer surface of the lower mold; The buffer assembly includes a buffer column, a rubber pad is fixedly connected to the outer surface of the buffer column, the outer surface of the rubber pad is in contact with the inner surface of the base, and a reinforcing plate is fixedly connected to the outer surface of the base.

[0007] As a further description of the above technical solution: A positioning key is fixedly connected to the top of the outer surface of the lower mold, and a positioning groove is opened at the bottom of the outer surface of the upper mold. The outer surface of the positioning key is inserted into the inner surface of the positioning groove.

[0008] As a further description of the above technical solution: The punch and die are provided in four sets, and are distributed in a square on the top of the outer surface of the lower die and the bottom of the outer surface of the upper die.

[0009] As a further description of the above technical solution: The upper mold has a threaded connection to the top of its inner surface, and there are four sets of the connectors, which are evenly distributed on the top of the outer surface of the upper mold.

[0010] As a further description of the above technical solution: The upper mold has four sets of injection holes on the top of its inner surface, arranged in a square pattern.

[0011] As a further description of the above technical solution: The upper mold has vent holes on the top of its inner surface. There are four sets of vent holes, and each set consists of four holes arranged in a square on the top of the upper mold's inner surface.

[0012] As a further description of the above technical solution: The top of the outer surface of the upper mold is fixedly connected with a lifting ring. There are four sets of lifting rings, which are distributed in a square on the top of the outer surface of the upper mold.

[0013] As a further description of the above technical solution: The reinforcing plate is designed as a triangle.

[0014] This utility model has the following beneficial effects: In this invention, the vibration motor drives the mold to vibrate, causing the gas inside the material to quickly gather towards the liquid surface and be discharged through multiple pre-set vent holes in the upper mold. This effectively avoids problems such as residual bubbles, scorch marks, and filling resistance, significantly improving the internal density and appearance integrity of the rubber bucket and ensuring consistent product quality.

[0015] 2. In this utility model, a flexible connection between the lower mold and the base is achieved through rubber blocks. It is also equipped with a buffer component to provide vertical buffer support, rubber pads to absorb vibration and avoid rigid collisions, and triangular reinforcing plates to strengthen the base structure, thus constructing a multi-level shock absorption system. This effectively weakens vibration impact, reduces stress concentration and noise, protects the mold and base structure, and improves the stability and service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a small rubber bucket integrated injection molding equipment proposed in this utility model; Figure 2 This is a schematic diagram of the mold opening structure of a small rubber bucket integrated injection molding equipment proposed in this utility model; Figure 3 This is a schematic diagram of the bottom structure of the upper mold of a small rubber bucket integrated injection molding equipment proposed in this utility model; Figure 4 This is a cross-sectional view of the lower mold structure of a small rubber bucket integrated injection molding equipment proposed in this utility model; Figure 5 This is a schematic diagram of the connecting component structure of a small rubber bucket integrated injection molding equipment proposed in this utility model.

[0017] Legend: 1. Base; 2. Lower mold; 3. Upper mold; 4. Lifting ring; 5. Vibration motor; 6. Buffer assembly; 601. Buffer column; 602. Reinforcing plate; 603. Rubber pad; 7. Connector; 8. Vent hole; 9. Punch; 10. Positioning key; 11. Cavity; 12. Positioning groove; 13. Injection hole; 14. Rubber block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-2 , Figure 4This utility model provides an embodiment of a small rubber bucket integrated injection molding equipment, including a base 1, which provides the overall support foundation for the equipment. A lower mold 2 is fixedly connected to the inner surface of the base 1 via rubber blocks 14. The rubber blocks 14 effectively buffer the vibration transmission during the operation of the lower mold 2, reducing the impact of vibration on the connection structure of the base 1 and improving the operational stability of the equipment. An upper mold 3 is connected to the top of the outer surface of the lower mold 2. The upper mold 3 cooperates with the lower mold 2 to jointly enclose the cavity space for rubber bucket injection molding, providing a closed mold cavity for material molding. A vibration motor 5 is fixedly connected to the top of the outer surface of the mold 3. When the vibration motor 5 is working, it drives the upper mold 3 and the lower mold 2 to vibrate synchronously, so that the air inside the injection material quickly gathers to the liquid surface and is discharged, avoiding defects such as bubbles, scorch marks and insufficient filling, and improving the product molding quality. A punch 9 is fixedly connected to the top of the upper mold 3. A concave mold 11 is opened at the bottom of the outer surface of the upper mold 3. The top of the outer surface of the punch 9 is inserted into the inner surface of the concave mold 11. The punch 9 and the concave mold 11 are inserted and matched to accurately construct the molding cavity contour of the rubber barrel, ensuring the product dimensional accuracy and shape consistency.

[0020] Reference Figures 1-2 , Figure 4 A buffer assembly 6 is provided at the bottom of the outer surface of the lower mold 2. The buffer assembly 6 can further buffer the vibration of the mold. The buffer assembly 6 includes a buffer column 601, which provides vertical buffer support for the lower mold 2 and disperses vibration energy. A rubber pad 603 is fixedly connected to the outer surface of the buffer column 601. The outer surface of the rubber pad 603 is in contact with the inner surface of the base 1. The rubber pad 603 further absorbs the vibration impact, avoids rigid collision between the buffer column 601 and the base 1, reduces stress concentration and noise, and protects the structure of the mold and the base 1. A reinforcing plate 602 is fixedly connected to the outer surface of the base 1. The reinforcing plate 602 is triangular. The triangular reinforcing plate 602 uses the stability of triangle to enhance the structural strength of the base 1, making it more stable to withstand the impact of the buffer assembly 6 and prevent the base 1 from deforming.

[0021] Reference Figures 2-3 A positioning key 10 is fixedly connected to the top of the outer surface of the lower mold 2, and a positioning groove 12 is opened at the bottom of the outer surface of the upper mold 3. The outer surface of the positioning key 10 is inserted into the inner surface of the positioning groove 12. The positioning key 10 and the positioning groove 12 are inserted to achieve precise alignment between the upper mold 3 and the lower mold 2, ensure the cavity closing accuracy, and avoid product defects caused by misalignment. There are four sets of punches 9 and dies 11, which are distributed in a square on the top of the outer surface of the lower mold 2 and the bottom of the outer surface of the upper mold 3. The four sets of punches 9 and dies 11 are distributed in a square, which can simultaneously injection mold multiple rubber barrels, greatly improve production efficiency, and adapt to the needs of mass production.

[0022] Reference Figures 1-2 , Figure 5 The upper mold 3 has a threaded connection of connector 7 on the top of its inner surface. There are four sets of connector 7, which are evenly distributed on the top of the outer surface of the upper mold 3. The even distribution of the four sets of connector 7 facilitates the stable connection of the injection delivery pipe, prevents the delivery pipe from loosening and leaking during injection, and ensures the sealing and stability of the injection process. The upper mold 3 has four sets of injection holes 13, which are distributed in a square on the top of the inner surface of the upper mold 3. The four sets of injection holes 13 correspond to the four sets of cavities, realizing synchronous injection of multiple cavities, ensuring the uniformity of material filling speed and amount in each cavity, and improving product consistency.

[0023] Reference Figures 2-4 The upper mold 3 has four sets of vent holes 8 on the top of its inner surface, arranged in a square pattern. The distribution of four vent holes 8 in each set can efficiently expel the air trapped in the material during injection molding, avoiding air bubble residue, scorch marks, and filling resistance, thus optimizing the internal quality and appearance of the product. The upper mold 3 has four sets of lifting rings 4 fixedly connected to the top of its outer surface, arranged in a square pattern. This square distribution of the four sets of lifting rings 4 facilitates stable lifting of the upper mold 3 by hoisting equipment, improving the convenience and safety of mold opening and closing operations, and reducing the difficulty of manual operation.

[0024] Working principle: During injection molding, the upper mold 3 is first connected to the lifting device via the lifting ring 4 fixed at its top, so that the upper mold 3 is lifted on top of the lower mold 2. The upper mold 3 is then inserted into the positioning key 10 at the top of the lower mold 2 through the positioning groove 12 at its bottom. After the two molds are closed, the punch 9 and the die 11 form a cavity. Then, the output ends of the four sets of injection delivery pipes are threaded to the four sets of connecting parts 7 on the upper mold 3 to prevent the delivery pipes from becoming loose during injection. Then, when injection molding is performed, the vibration motor 5 is turned on, so that the vibration motor 5 drives the upper mold 3 and the lower mold 2 to vibrate simultaneously. During injection molding, the air trapped inside the material is vibrated and moves quickly to the liquid surface of the material and is discharged from the vent hole 8 on the upper mold 3. This prevents the gas trapped inside the material from forming bubbles, scorch marks, or insufficient filling due to gas resistance.

[0025] Furthermore, when the two molds vibrate due to the vibration motor 5, the lower mold 2 is connected to the base 1 via the rubber block 14, which reduces the impact of vibration on the overall connection of the mold and prevents loosening or structural damage. In addition, a buffer column 601 is fixedly connected to the outer surface of the lower mold 2, and a rubber pad 603 is fixedly connected to the outer surface of the buffer column 601 to avoid stress concentration caused by the mold directly colliding with the inner surface of the base 1 during vibration. This also reduces noise. Furthermore, a reinforcing plate 602 is added to the base 1 so that the base 1 can withstand the impact of the buffer column 601 in a more stable form.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small rubber bucket integrated injection molding equipment, comprising a base (1), characterized in that: The inner surface of the base (1) is fixedly connected to the lower mold (2) by a rubber block (14). The top of the outer surface of the lower mold (2) is contacted with the upper mold (3). The top of the outer surface of the upper mold (3) is fixedly connected to the vibration motor (5). The top of the upper mold (3) is fixedly connected to the punch (9). The bottom of the outer surface of the upper mold (3) is provided with a concave mold (11). The top of the outer surface of the punch (9) is inserted into the inner surface of the concave mold (11). The bottom of the outer surface of the lower mold (2) is provided with a buffer assembly (6). The buffer assembly (6) includes a buffer column (601), and a rubber pad (603) is fixedly connected to the outer surface of the buffer column (601). The outer surface of the rubber pad (603) is in contact with the inner surface of the base (1), and a reinforcing plate (602) is fixedly connected to the outer surface of the base (1).

2. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The lower mold (2) has a positioning key (10) fixedly connected to the top of its outer surface, and the upper mold (3) has a positioning groove (12) at the bottom of its outer surface. The outer surface of the positioning key (10) is inserted into the inner surface of the positioning groove (12).

3. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The punch (9) and die (11) are provided in four sets, and are distributed in a square on the top of the outer surface of the lower mold (2) and the bottom of the outer surface of the upper mold (3).

4. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The upper mold (3) has a threaded connection to the top of its inner surface with a connector (7). The connector (7) has four sets and is evenly distributed on the top of the outer surface of the upper mold (3).

5. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The upper mold (3) has injection holes (13) on the top of its inner surface. There are four sets of injection holes (13), which are distributed in a square shape on the top of the inner surface of the upper mold (3).

6. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The upper mold (3) has an exhaust hole (8) on the top of its inner surface. There are four sets of exhaust holes (8), and each set consists of four holes arranged in a square on the top of the inner surface of the upper mold (3).

7. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The top of the outer surface of the upper mold (3) is fixedly connected with a lifting ring (4). The lifting ring (4) is provided in four sets and is distributed in a square on the top of the outer surface of the upper mold (3).

8. The small rubber bucket integrated injection molding equipment according to claim 1, characterized in that: The reinforcing plate (602) is triangular.

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